2143251005 has 16 divisors (see below), whose sum is σ = 2942901120. Its totient is φ = 1467865152.

The previous prime is 2143250971. The next prime is 2143251017. The reversal of 2143251005 is 5001523412.

It is a cyclic number.

It is not a de Polignac number, because 2143251005 - 2²² = 2139056701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7919 + ... + 65948.

It is an arithmetic number, because the mean of its divisors is an integer number (183931320).

Almost surely, 2^2143251005 is an apocalyptic number.

It is an amenable number.

2143251005 is a deficient number, since it is larger than the sum of its proper divisors (799650115).

2143251005 is an equidigital number, since it uses as much as digits as its factorization.

2143251005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74708.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2143251005 is about 46295.2589905273. The cubic root of 2143251005 is about 1289.3109724997.

Adding to 2143251005 its reverse (5001523412), we get a palindrome (7144774417).

The spelling of 2143251005 in words is "two billion, one hundred forty-three million, two hundred fifty-one thousand, five".